Sakai server requirements advice

[alaanizar]

Hi all,

My question tonight is a bit technical and server related.

I have the choices between two servers to run VMWare on one of them.

The virtual machines are the different components of a production deployment of Sakai, not development.  Just hosting and production level for approximately 10000 users and some 500 worksites.

The VMs will be: mysql server, NFS server, smtp server, tomcat servers (4 nodes) 1nd a terracotta server for sessions replication. 

The servers have the following in common :

1. RAM: 32 GB DDR4 ECC 2133 GHz

2. Hard Raid 1

3. 2x 2T Sata3 and 2x 480 GB SSD

4. Very stable network infrastructure 

And here come the differences that I need your advice on:

1: 250 Mbps vs 500 Mbps bandwidth  (guaranteed bandwidth in both directionsIP and DOWN)

2: the CPU:

2.1: Intel Xeon D1520 (4c/8t), running at 2,2/2,6 GHz

2.2: Intel Xeon D1540 (8c/16t), running at 2,0/2,6 GHz

2.3: Intel Xeon E5 1630 v3 (4c/8t), running at 3,7/3,8 GHz

The Intel D1520 and D1540 have 250 Mbps bandwidth guaranteed up and down. While the Xeon E5 1630 v3 has 500 Mbps bandwidth guaranteed up and down.

There will be approximately 6 VMs.

Can you please help me decide on the server to choose?

At max, there will be 200 users connected simultaneously at most.

Thank you so much for taking time to read this.

Yours,

Sent from my Samsung Galaxy smartphone.

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[Diego del Blanco Orobitg]

I'm not a HW expert at all, but there is a key point in your mail that is very important. You say "At max, there will be 200 users connected simultaneously at most". Your design should be prepared to support the max. concurrency peak. Having 10000 or 100000 users is not so important as the number of concurrent ones.

If 200 users is the case and you are going to use 4 tomcat nodes with load balancing... IMO you are going to have more than enough with any of the proposals that you are describing.  With any of these configurations you surely would be able to support concurrency peaks over 2000 users!

Of course the better, the best... but in this scenario I think the cheaper one will be enough.

Anyway, I let any HW expert in the group to give to you more advice because maybe I'm missing something.

Regards

Diego del Blanco Orobitg

Sakai Tech Lead (UNICON)

Apereo LATAM Representative (Apereo Foundation)

Ph: +1-480-521-8527

Em: diegodelbl...@gmail.com

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[Neal Caidin]

We also have a "sakai-production" list which is more about these kinds of issues of hardware and configuration, so I'm looping in that list.

-- neal

[alaanizar]

Thank you all,

Neal, can you please point me to that list of HW specs of other universities.  I can't find it.

Thank you

However, I would like to know what kind of server processors they are using

Sent from my Samsung Galaxy smartphone.

[Neal Caidin]

Well the "list" to which I referred is an email Google Group called sakai-production, which is a list focusing on production issues for Sakai (like scaling).

https://groups.google.com/a/apereo.org/forum/#!forum/sakai-production

But another "list" is the list of schools self reporting their status in Sakai. Several have updated their environment information recently. If you add the JQL clause " Order by updated desc "

you'll find the records most recently updated near the top of the sort.

https://jira.sakaiproject.org/issues/?filter=15478

HTH

On Tue, Jan 10, 2017 at 10:20 AM, alaanizar <alaa...@iihem.ac.ma> wrote:

Thank you all,

Neal, can you please point me to that list of HW specs of other universities.  I can't find it.

Thank you

However, I would like to know what kind of server processors they are using

Sent from my Samsung Galaxy smartphone.

-------- Original message --------

From: Neal Caidin <neal....@apereo.org>

Date: 1/9/17 14:06 (GMT+00:00)

To: Diego del Blanco Orobitg <diego.delblanco.sakai@gmail.com>, Sakai Production <sakai-pr...@apereo.org>

Cc: alaanizar <alaa...@iihem.ac.ma>, sakai-dev <saka...@apereo.org>

Subject: Re: [sakai-dev] Sakai server requirements advice

We also have a "sakai-production" list which is more about these kinds of issues of hardware and configuration, so I'm looping in that list.

-- neal

[alaanizar]

Thank you neal